Preowned, one owner, Adcom GFA-555II power amplifier. Unit was bench tested and found to be performing at factory specs.

• Power output: 200 watts per channel into 8Ω (stereo), 600 watts into 8Ω (mono)

  Frequency response: 10Hz to 20kHz

  Total harmonic distortion: 0.09%

  Damping factor: 800

  Gain: 27 dB

  Input sensitivity: 1.75V

  Signal to noise ratio: 110dB

  Semiconductors: 42 x transistors, 2 x zener diodes, 13 x diodes, 2 x IC, 2 x diode bridges

  Dimensions: 185 x 432 x 310mm

  Weight: 16kg